14 lb ft, +30 degree's... the rocker stud threads have a tendency to pull out easily.
wouldnt go much more than that.

tightening the rocker arm bolts an extra 15degree's is not going to tighten them down on the pushrod that much more to reduce a tick. if you have a tick its due to the camshaft design of the press on lobes on the 3x00 engines.
or you have too much clearance and not enough pushrod preload on the lifter.

I stand corrected. I'm holding in my hand exactly what I printed off of Mitchell a month ago, "3.4l V6 2001 Pontiac Grand Am SE" and it says 89 in-lbs. But then I looked at Mitchell today for something else, and it says 14 ft-lbs. I'm absolutely confused. That would mean that my rockers have in fact been fairly loose for over a month. That's wonderful news. I wonder what damage I've done.